void fillProduct() { try { DataTable dt = ClassSetting.selectAllProduct(); cmbProduct.DataSource = dt; cmbProduct.DisplayMember = "product_name"; cmbProduct.ValueMember = "Product_id"; cat_id = int.Parse(dt.Rows[0][4].ToString()); color_id = int.Parse(dt.Rows[0][5].ToString()); type_id = int.Parse(dt.Rows[0][6].ToString()); } catch (Exception) { } }